Boat construction



Dec. 22, 1931. G. w. HEINEMANN BOAT CONSTRUCTION 1951 2 Sheets-Sheet Filed March 10 Inventor A Home y BOAT CONSTRUCTION Filed March 10, 1931 2 Sheets-Sheet 2 6 I 9 O Invqnior QT W flake/47mm A ilorney Patented Dec. 22, 1931 w hum. mt

GERNorw. HEINEMANN, OF IBELLINGHAM, WASHINGTQN; ART R mn srnAron or SAID GERNOT w. rrnmn vmniv, DECEASED r.

BOAT consrnnc'r'ron' Application filed March 10, 1931. Serial no. 521,587.,

This invention relates to a boat construction, the general object of the invention is to provide a strong, seaworthy, light and durable boat of less than one-half of the '5 Weight of the lightest boats of the same proportions as now built, which enables the boat to have more speed per horsepower; Another object of the invention is to provide a boat which is portable-in the smaller sizes of boats '10 and the planking of which is easily renewed when necessary, and one which has great resistance to the absorptionof water, and which can be shipped or transported in knockdown form. V

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts to be hereinafterfully described, illustrated in theaccomp anying drawings and specifical- 20 ly pointed out in the appended claims.

In describing the invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and inwhich :x

Figure 1 is a transverse sectional view' through portions of the boat constructed in accordance with the present, invention.

Fig.2 is a horizontal sectional view through the bow. of the boat. 7

-,,Fig. 3 is a view of the. stem member. Fig. 4: is a side view of said member.

- Fig. 5 is a view-partly in section showing how the seam battens and planks are connected to a frame part. 7 i l 7 As shown in these views, the frame or rib assen blyA, of the boat, is built of aircraft, seamlesssteel tubing 1 or aluminum alloy tubing of any desired cross sectional shape, the joints2of which are welded or brazed or connectedby gusset plates and bolts where necessa1'y, as shown' at 23. V The bottom of the frame or rib assembly is braced b-ythe.

horizontalmembers 3, and the diagonal members 1, asshown in Fig. 1, these'members 3 and 1 also, being of seamless steel tubing, and suchmemhers serve two purposes, name- 1y, to brace the bottom and to supply a foundation for the flooring of the'boat. l

59 The ribs or frame parts are formed.

the recesses 5 for receiving the seam battens 6. Each recess is sealed from outside air by a light sheet steel strip 7 welded or brazed in place. Nuts 8"areweldedor bra-zed to the inside faces of these sheets to receive the this keel is also held in place by machine bolts engaging nuts welded to therframe'part in the same manner as the battens and planks are connected with the frame part.

A stem is also' built of light sheet steel of substantially triangular-shapein cross sec-' tionor an other suitable shape with the oint 16. welde or brazed andthenuts 17 for the machine screws 18 are welded to the inner faces ofthe stem as shown iniFig. 2. a This stem is formed with the lightening holes 19 and at itsupper end is formed with the eye 20 for receiving a'rope or cable for tying the boat to the dock or the like.

V The stem flares outwardly to the proper angle at its lower end to properly engage the front end of the keel 13. The machine screws 18 of course hold the front ends of the planks V to the stem'as shown in Fig. 2, andthe'nose of the boat is preferably formed of' wood as shownat 21 inFig..2.i V a I The planking is treatedon both sides with a layer of aircraft fabric 22 treatediwith the usual do'peso as to completelyseal thewood and therefore the boat against gaining weight by: water absorptionr This also results -inH great'resist ance of hull against splintering by impact "forces and makes theme .of lighter planking possible- It also protects the boat against dryrot and marine growth andprovides a finish that does not have to be renewed periodically, like scraping andrepainting' of 1 loo seam;batt'ens;,,each: recess: beinglsealedby a e galvanized or otherwise treated for preventing rust." As the frame parts are sealed and treated against rust and the planking is coated with fabric and dope, the boat has long life and will outlive boats as now constructed. By using; the machinebolts and nuts,the boat can easily bee-knocked down for.

' transportation and assembled at the point of use, and when the planking is damaged, through-collision orotlierWise, such planking can be easily-renewed-through theuse-of the machine bolts for connecting the planking to the'frame.

It is thought from the foregoing descrip: tion that the advantages and novel' features ofrthe inventionavillibereadily apparent.

- I-tzi's .to lbejnnderstoods thatchangesmay be Inadein the construction and in the: combina-. tion; andarrangement: of the" several parts,

' providedathatssuehl changes; fallilwithin the scope-of the appended claims: 7

Having thus; describedtmy invention; what I claim as new is C v1.. Aiboat of-therclass-described comprising a frame part. formed of; Tsteel- :or other metal tubing;the-joints-of-1whichl are welded or brazed, lthe outer portions ofthe frameeparts having recesses therein; for receiving: the

sheet zmetal member forming the sides-v and bottomof the recess, planking connected with y the frame :part: and the battens; 'thelongi;

tudinalscentnal part of; .thezbottom of' the boat having iai zrecess -:;therein, 'formed with/ steel side and bottom Walls, a :keel 'in the recess, and axe tubular stem formed bf steel at the: front endof' the-boat and having its lower endcons bottom. portions; of the frame, said parts -b'eingwveldedtogethenthe outer portion of the fnamezzpart bemgrrecessed' and the bottom and side walls of each reces'sgbeingsformed f isteelinuts-welded te-the inner: faces of" the bottdm'. partsofi the recesses,- battensi passing e thru 'the-=recesses; planking forming: the exteiriorrwallsrofthe' ship.- and'pa'ssingLac-ross the battenseand iportions of' the 2 frame; machine screws passing through; the planking and the battens .:a11d x, engaging: the nuts, machine screwsiandinuts for fastening ,rportions ofthe planking to the frame; partythe-longitudinal central part. of the bottom. of thevwboat being iecessedriakeelinsaidrecesses; :a tubular-stem of metal at the fronatwendofrthe boat, ma chine? screws; and nuts-passed through & the

j ing connectingthe horizontal members tothe 'bottomportio'ns of the-frame-,'- said parts be- 7 nectedfront ends of the said planking and said stem.

3. A boat of the class described comprising a frame formed of steel tubing, welded or brazed together, horizontal members also formed of steeltubing and extending across the bottom of the boat and acting to brace the same and form supports for the boats flooring, truss members also formed of steel tubingwelded together, the outer portion of the frame part being recessed and the bottom and side...walls..of eachQrecess being formed of steel, nuts welded to the inner faces of the bottomxpart; of the recesses, battens passing through; the recesses, plankingiforming the exterior: iwallsi of thezship and: passin'gacross the battens and portions-of the frame, ma-

chinearscrews pasingi through the planking 1 and'the. battens and engaging thenuts, ma-;

chine. screwsand-:nuts for fasteningportions ofztheplankingito :therfr'ameparnthe longie tudinalw centrali partof the. bottom 'ofthe boat-being recessed, Ia 'keel inisaid recesses a tubular-stem of metal at the front endvof the boat, machine screws'and nuts passedthrough the1,:frontt'ends of the said planking and said stem, and fabric covering the inner and outer sidessof-the planking andtreated with dope.

4 Aboat of the classdescribed comprising I a frame formed of 'steeli-tubing; theijoints of which; are welded or brazed togetherppor V tionslof-the frameahaving recesses therein; the

sides and ibottomswof "which are formed of steel parts, battens located in the recesses and e passing across the 1 frame parts, planking formingi'the exterior walls of the boat and connected with the battens and portions of the frame parts, and fabric covering the inner andouter faces of the planking andtreated with dopez 5. A boatof the classdescribed comprising aframe formed ofsteel tubing, the joints'of which are welded or brazed, said frame being formed'with recesses; the bottoms and side walls'of which are formed of metal sheets,

seam battens extending through the recesses and fastened therein, planking forming the exterior walls of the ship and'con-neeted with the frame parts and to the batten parts, re-

cesses formed in the'frame parts of the central part of the bottom thereoffa keel passing tliru' the "recesses and fastened to the frame parts; astem'formed of tubular-metal and to which thefront' ends of theplanking are con- 7 nected with the front end'of the keeli" 6; A boat of the class described comprising a plurality of transverse frame members each formed 'ofhollow metal parts, the joints of whichs arewelded or'brazed, battens con'-' nected 'withthe members and'plankingiforming,-.'the .exterior walls of the boat-grand con- "the lower 'end of the stem beingipon:

nected with the battens and portions of the frame part. V v

7. A boat of the class described comprising a plurality of transversely arranged frame parts each formed of metal tubing, the joints of which are Welded or brazed, battens con nected With the frame parts, planking form; ing the exterior Walls of the boat and connected with the battens and portions of the frame part and fabriecovering the inner and guter faces of the planking and treated with ope.

In testimony whereof I aflix-my signature.

GERNOT W. HEINEMANN 

